A correlation coefficient is calculated and found to be equal to 1.0. which of the following statements is true?
a. the points in a scatter plot of the two variables will be in a straight line with a positive slope.
b. the points in the scatter plot of the two variables will slope downward from left to right but will not be in a straight line.
c. the scatter plot will show no relationship between the two variables.
d. the points in a scatter plot of the two variables will be in a straight line with a negative slope.
